Total Mercury and Methylmercury in Lake Water of Canada’s Oil Sands Region
Increased delivery of mercury to ecosystems is a common consequence of industrialization, including in the Athabasca Oil Sands Region (AOSR) of Canada. Atmospheric mercury deposition has been studied previously in the AOSR; however, less is known about the impact of regional industry on toxic methyl...
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| Veröffentlicht in: | Environmental science & technology 2018-10, Vol.52 (19), p.10946-10955 |
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| creator | Emmerton, Craig A Cooke, Colin A Wentworth, Gregory R Graydon, Jennifer A Ryjkov, Andrei Dastoor, Ashu |
| description | Increased delivery of mercury to ecosystems is a common consequence of industrialization, including in the Athabasca Oil Sands Region (AOSR) of Canada. Atmospheric mercury deposition has been studied previously in the AOSR; however, less is known about the impact of regional industry on toxic methylmercury (MeHg) concentrations in lake ecosystems. We measured total mercury (THg) and MeHg concentrations for five years from 50 lakes throughout the AOSR. Mean lake water concentrations of THg (0.4–5.3 ng L–1) and MeHg (0.01–0.34 ng L–1) were similar to those of other boreal lakes and 100 km northwest of oil sands mines and received runoff from geological formations high in metals concentrations. MeHg concentrations were highest in those lakes, and in smaller productive lakes closer to oil sands mines. Simulated annual average direct deposition of THg to sampled lakes using an atmospheric chemical transport model showed |
| doi_str_mv | 10.1021/acs.est.8b01680 |
| format | Article |
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Atmospheric mercury deposition has been studied previously in the AOSR; however, less is known about the impact of regional industry on toxic methylmercury (MeHg) concentrations in lake ecosystems. We measured total mercury (THg) and MeHg concentrations for five years from 50 lakes throughout the AOSR. Mean lake water concentrations of THg (0.4–5.3 ng L–1) and MeHg (0.01–0.34 ng L–1) were similar to those of other boreal lakes and <5% of all samples exceeded Provincial water quality guidelines. Lakes with the highest THg concentrations were found >100 km northwest of oil sands mines and received runoff from geological formations high in metals concentrations. MeHg concentrations were highest in those lakes, and in smaller productive lakes closer to oil sands mines. Simulated annual average direct deposition of THg to sampled lakes using an atmospheric chemical transport model showed <2% of all mercury deposited to sampled lakes was emitted from oil sands activities. Consequently, spatial patterns of mercury in AOSR lakes were likely most influenced by watershed and lake conditions, though mercury concentrations in these lakes may be perturbed with future development and climatic change.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/acs.est.8b01680</identifier><identifier>PMID: 30229653</identifier><language>eng</language><publisher>United States: American Chemical Society</publisher><subject>Aquatic ecosystems ; Atmospheric composition ; Chemical transport ; Climate change ; Computer simulation ; Deposition ; Dimethylmercury ; Environmental changes ; Heavy metals ; Industrial development ; Lakes ; Mercury ; Mercury (metal) ; Mercury atmosphere ; Metal concentrations ; Methylmercury ; Mines ; Oil sands ; Organic chemistry ; Runoff ; Water quality</subject><ispartof>Environmental science & technology, 2018-10, Vol.52 (19), p.10946-10955</ispartof><rights>Copyright American Chemical Society Oct 2, 2018</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a402t-bde261b9a78de8a6baee21bb9fb13212e3f9a4499126592b738eb4262470c6213</citedby><cites>FETCH-LOGICAL-a402t-bde261b9a78de8a6baee21bb9fb13212e3f9a4499126592b738eb4262470c6213</cites><orcidid>0000-0002-7417-5263 ; 0000-0001-9511-9191</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/acs.est.8b01680$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/acs.est.8b01680$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,777,781,2752,27057,27905,27906,56719,56769</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30229653$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Emmerton, Craig A</creatorcontrib><creatorcontrib>Cooke, Colin A</creatorcontrib><creatorcontrib>Wentworth, Gregory R</creatorcontrib><creatorcontrib>Graydon, Jennifer A</creatorcontrib><creatorcontrib>Ryjkov, Andrei</creatorcontrib><creatorcontrib>Dastoor, Ashu</creatorcontrib><title>Total Mercury and Methylmercury in Lake Water of Canada’s Oil Sands Region</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Increased delivery of mercury to ecosystems is a common consequence of industrialization, including in the Athabasca Oil Sands Region (AOSR) of Canada. Atmospheric mercury deposition has been studied previously in the AOSR; however, less is known about the impact of regional industry on toxic methylmercury (MeHg) concentrations in lake ecosystems. We measured total mercury (THg) and MeHg concentrations for five years from 50 lakes throughout the AOSR. Mean lake water concentrations of THg (0.4–5.3 ng L–1) and MeHg (0.01–0.34 ng L–1) were similar to those of other boreal lakes and <5% of all samples exceeded Provincial water quality guidelines. Lakes with the highest THg concentrations were found >100 km northwest of oil sands mines and received runoff from geological formations high in metals concentrations. MeHg concentrations were highest in those lakes, and in smaller productive lakes closer to oil sands mines. Simulated annual average direct deposition of THg to sampled lakes using an atmospheric chemical transport model showed <2% of all mercury deposited to sampled lakes was emitted from oil sands activities. Consequently, spatial patterns of mercury in AOSR lakes were likely most influenced by watershed and lake conditions, though mercury concentrations in these lakes may be perturbed with future development and climatic change.</description><subject>Aquatic ecosystems</subject><subject>Atmospheric composition</subject><subject>Chemical transport</subject><subject>Climate change</subject><subject>Computer simulation</subject><subject>Deposition</subject><subject>Dimethylmercury</subject><subject>Environmental changes</subject><subject>Heavy metals</subject><subject>Industrial development</subject><subject>Lakes</subject><subject>Mercury</subject><subject>Mercury (metal)</subject><subject>Mercury atmosphere</subject><subject>Metal concentrations</subject><subject>Methylmercury</subject><subject>Mines</subject><subject>Oil sands</subject><subject>Organic chemistry</subject><subject>Runoff</subject><subject>Water quality</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kL1OwzAURi0EoqUwsyFLjCitfZ049oiq8iMFVYIi2CI7cSAlTYqdDN14DV6PJ8FVQzema12d8135Q-ickjElQCcqc2Pj2rHQhHJBDtCQRkCCSET0EA0JoSyQjL8O0IlzS0IIMCKO0YARAMkjNkTJomlVhR-MzTq7warO_bt931SrflPWOFEfBr-o1ljcFHiqapWrn69vh-dlhZ-84vCjeSub-hQdFapy5qyfI_R8M1tM74Jkfns_vU4CFRJoA50b4FRLFYvcCMW1Mgao1rLQlAEFwwqpwlBKCjySoGMmjA6BQxiTjANlI3S5y13b5rPz_0-XTWdrfzL1upRCxlJ4arKjMts4Z02Rrm25UnaTUpJu20t9e-nW7tvzxkWf2-mVyff8X10euNoBW3N_87-4X_Q5ef0</recordid><startdate>20181002</startdate><enddate>20181002</enddate><creator>Emmerton, Craig A</creator><creator>Cooke, Colin A</creator><creator>Wentworth, Gregory R</creator><creator>Graydon, Jennifer A</creator><creator>Ryjkov, Andrei</creator><creator>Dastoor, Ashu</creator><general>American Chemical Society</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-7417-5263</orcidid><orcidid>https://orcid.org/0000-0001-9511-9191</orcidid></search><sort><creationdate>20181002</creationdate><title>Total Mercury and Methylmercury in Lake Water of Canada’s Oil Sands Region</title><author>Emmerton, Craig A ; Cooke, Colin A ; Wentworth, Gregory R ; Graydon, Jennifer A ; Ryjkov, Andrei ; Dastoor, Ashu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a402t-bde261b9a78de8a6baee21bb9fb13212e3f9a4499126592b738eb4262470c6213</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Aquatic ecosystems</topic><topic>Atmospheric composition</topic><topic>Chemical transport</topic><topic>Climate change</topic><topic>Computer simulation</topic><topic>Deposition</topic><topic>Dimethylmercury</topic><topic>Environmental changes</topic><topic>Heavy metals</topic><topic>Industrial development</topic><topic>Lakes</topic><topic>Mercury</topic><topic>Mercury (metal)</topic><topic>Mercury atmosphere</topic><topic>Metal concentrations</topic><topic>Methylmercury</topic><topic>Mines</topic><topic>Oil sands</topic><topic>Organic chemistry</topic><topic>Runoff</topic><topic>Water quality</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Emmerton, Craig A</creatorcontrib><creatorcontrib>Cooke, Colin A</creatorcontrib><creatorcontrib>Wentworth, Gregory R</creatorcontrib><creatorcontrib>Graydon, Jennifer A</creatorcontrib><creatorcontrib>Ryjkov, Andrei</creatorcontrib><creatorcontrib>Dastoor, Ashu</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Emmerton, Craig A</au><au>Cooke, Colin A</au><au>Wentworth, Gregory R</au><au>Graydon, Jennifer A</au><au>Ryjkov, Andrei</au><au>Dastoor, Ashu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Total Mercury and Methylmercury in Lake Water of Canada’s Oil Sands Region</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2018-10-02</date><risdate>2018</risdate><volume>52</volume><issue>19</issue><spage>10946</spage><epage>10955</epage><pages>10946-10955</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><abstract>Increased delivery of mercury to ecosystems is a common consequence of industrialization, including in the Athabasca Oil Sands Region (AOSR) of Canada. Atmospheric mercury deposition has been studied previously in the AOSR; however, less is known about the impact of regional industry on toxic methylmercury (MeHg) concentrations in lake ecosystems. We measured total mercury (THg) and MeHg concentrations for five years from 50 lakes throughout the AOSR. Mean lake water concentrations of THg (0.4–5.3 ng L–1) and MeHg (0.01–0.34 ng L–1) were similar to those of other boreal lakes and <5% of all samples exceeded Provincial water quality guidelines. Lakes with the highest THg concentrations were found >100 km northwest of oil sands mines and received runoff from geological formations high in metals concentrations. MeHg concentrations were highest in those lakes, and in smaller productive lakes closer to oil sands mines. Simulated annual average direct deposition of THg to sampled lakes using an atmospheric chemical transport model showed <2% of all mercury deposited to sampled lakes was emitted from oil sands activities. 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| subjects | Aquatic ecosystems Atmospheric composition Chemical transport Climate change Computer simulation Deposition Dimethylmercury Environmental changes Heavy metals Industrial development Lakes Mercury Mercury (metal) Mercury atmosphere Metal concentrations Methylmercury Mines Oil sands Organic chemistry Runoff Water quality |
| title | Total Mercury and Methylmercury in Lake Water of Canada’s Oil Sands Region |
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